Nuclear Geometry-Driven Femtoscopic Correlations in Light-Ion Collisions
Abstract
Recent anisotropic flow measurements in 16O+16O and 20Ne+20Ne collisions at a center-of-mass energy per nucleon pair of 5.36~TeV provide evidence for nuclear geometry-driven collectivity. In this Letter, we investigate the femtoscopic signatures of nuclear geometry in these light-ion collision systems, using a hybrid simulation framework that couples \textit{ab initio} nuclear configurations to viscous hydrodynamics and hadronic transport. We show that the Ne+Ne/O+O ratio of the freeze-out eccentricity, extracted from azimuthally sensitive femtoscopy, reaches 1.5-1.8 in central collisions for deformed nuclear configurations, compared with about unity for a spherical baseline. This enhancement is significantly larger than that of elliptic flow in the same simulations, and remains stable when pre-equilibrium free streaming is omitted, even though the absolute source radii change considerably. Confronting these predictions with future data will provide new, complementary constraints on nuclear structure and initial-condition modeling.
Related
- Evidence of Nuclear Geometry-Driven Anisotropic Flow in O + O and Ne + Ne Collisions at s NN = 5.36 TeV
- Nuclear-geometry-tagging events in high-energy Ne--Ne collisions
- Separating entanglement at emission from femtoscopic correlations
- Exploring possible 3ΛcH bound states through pΛc femtoscopic correlations
- Femtoscopic parameters of pion emission sources in EPOS4 Au+Au collisions from 7.7 to 200 GeV
BibTeX
@misc{kincses2026nuclear,
title = {{Nuclear Geometry-Driven Femtoscopic Correlations in Light-Ion Collisions}},
author = {Dániel Kincses and Bithika Karmakar and Iurii Karpenko and Boris Tomášik},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.29760},
eprint = {2610.29760},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.29760},
}
RIS
TY - UNPB
TI - Nuclear Geometry-Driven Femtoscopic Correlations in Light-Ion Collisions
AU - Dániel Kincses
AU - Bithika Karmakar
AU - Iurii Karpenko
AU - Boris Tomášik
PY - 2026
DA - 2026/10/21
PB - arXiv
DO - 10.48550/arxiv.2610.29760
UR - https://arxiv.org/abs/2610.29760
AB - Recent anisotropic flow measurements in ^16O+^16O and ^20Ne+^20Ne collisions at a center-of-mass energy per nucleon pair of 5.36~TeV provide evidence for nuclear geometry-driven collectivity. In this Letter, we investigate the femtoscopic signatures of nuclear geometry in these light-ion collision systems, using a hybrid simulation framework that couples \textit{ab initio} nuclear configurations to viscous hydrodynamics and hadronic transport. We show that the Ne+Ne/O+O ratio of the freeze-out eccentricity, extracted from azimuthally sensitive femtoscopy, reaches 1.5-1.8 in central collisions for deformed nuclear configurations, compared with about unity for a spherical baseline. This enhancement is significantly larger than that of elliptic flow in the same simulations, and remains stable when pre-equilibrium free streaming is omitted, even though the absolute source radii change considerably. Confronting these predictions with future data will provide new, complementary constraints on nuclear structure and initial-condition modeling.
ER -